Multi-Gas Detector Selection Guide
Match the right portable gas detector configuration to your workplace hazards, regulatory requirements, and operational needs
Free source-aware multi-gas detector planning screen for safety managers, instrument technicians, and procurement teams. Select local hazard prompts and see which common four-gas blind spots may require additional review. Outputs are not a purchase specification, calibration procedure, bump-test record, confined-space permit, hot-work authorization, alarm-setpoint approval, or emergency-response instruction.
Look up cross-sensitivity factors for your sensor configuration
Gas Detector Cross-Sensitivity Calculator →Review LEL/UEL for your combustible gas hazards
LEL/UEL Lookup →Size ventilation for confined spaces
Confined Space Ventilation Calculator →Look up chemical exposure limits for your target gases
Chemical Exposure Limits Lookup →How It Works
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Identify Hazard Prompts
Select atmospheric hazard prompts from SDS, process, previous-content, confined-space, hot-work, and site reviews. The preset list is not a job hazard analysis.
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Specify Application Context
Indicate whether the screen is for personal, area, pre-entry, or continuous monitoring context. Employer procedures and applicable regulations control actual testing and authorization.
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Review Sensor Prompts
Use the output to identify possible four-gas blind spots and additional sensor-review prompts. Verify every channel against the selected instrument manual and hazard assessment.
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Reconcile Sources
Before purchase or use, reconcile detector approvals, pump/tubing, sample delay, alarm settings, bump/cal records, correction factors, maintenance, training, and emergency actions with qualified review.
Built For
- Safety managers creating a detector review checklist before manufacturer or IH review
- Procurement teams documenting which hazards need instrument-manual confirmation
- Confined-space program administrators separating detector prompts from entry authorization
- Oil and gas safety coordinators flagging VOC, H2S, SO2, LEL, and inert-gas review gaps
- General industry safety professionals identifying when four-gas channels may miss selected hazards
References
- OSHA/eCFR 29 CFR 1910.146 confined-space source pointers
- OSHA atmospheric testing and pre-entry checklist context
- ISA combustible-gas detector standards committee source pointer
- Manufacturer manual and response-factor source pointers for selected detector families